Exercise cycle



FIG. 1 is a top-front-left side perspective view of an exercise cycle, with a screen retracted, showing the design;

FIG. 2 is a bottom-rear-right side perspective view of the exercise cycle of FIG. 1 , with the screen retracted, showing the design;

FIG. 3 is a front elevation view of the exercise cycle of FIG. 1 , with the screen retracted, showing the design;

FIG. 4 is a rear elevation view of the exercise cycle of FIG. 1 , with the screen retracted, showing the design;

FIG. 5 is a left side elevation view of the exercise cycle of FIG. 1 , with the screen retracted, showing the design;

FIG. 6 is a right side elevation view of the exercise cycle of FIG. 1 , with the screen retracted, showing the design;

FIG. 7 is a top plan view of the exercise cycle of FIG. 1 , with the screen retracted, showing the design;

FIG. 8 is a bottom plan view of the exercise cycle of FIG. 1 , with the screen retracted, showing the design;

FIG. 9 is a top-front-left side perspective view of the exercise cycle of FIG. 1 , with the screen extended, showing the design; and,

FIG. 10 is a left side elevation view of the exercise cycle of FIG. 1 , with the screen extended.

The broken lines in the drawings illustrate portions of the exercise cycle that form no part of the claimed design. 

CLAIM The ornamental design for an exercise bicycle, as shown and described. 